Date:	Fri, 12 Sep 2014 15:32:53 +0800
From:	Jianqun <jay.xu@...k-chips.com>
To:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	heiko@...ech.de, lgirdwood@...il.com, broonie@...nel.org,
	perex@...ex.cz, tiwai@...e.de, grant.likely@...aro.org,
	jay.xu@...k-chips.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:	huangtao@...k-chips.com, cf@...k-chips.com
Subject: [PATCH 2/2] ASoC: rockchip-max98090: add driver for rockchip board using a max98090

The driver is used for rockchip board using a max98090.
Test on RK3288 with max98090.

Signed-off-by: Jianqun Xu <jay.xu@...k-chips.com>
---
 sound/soc/rockchip/Kconfig             |   9 +
 sound/soc/rockchip/Makefile            |   5 +-
 sound/soc/rockchip/rockchip_max98090.c | 308 +++++++++++++++++++++++++++++++++
 3 files changed, 321 insertions(+), 1 deletion(-)
 create mode 100644 sound/soc/rockchip/rockchip_max98090.c

diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index 78fc159..f82fbf5 100644
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -9,3 +9,12 @@ config SND_SOC_ROCKCHIP
 
 config SND_SOC_ROCKCHIP_I2S
 	tristate
+
+config SND_SOC_ROCKCHIP_MAX98090
+	tristate "ASoC support for Rockchip boards using a MAX98090 codec"
+	depends on SND_SOC_ROCKCHIP && I2C && GPIOLIB
+	select SND_SOC_ROCKCHIP_I2S
+	select SND_SOC_MAX98090
+	help
+	  Say Y or M here if you want to add support for SoC audio on Rockchip
+	  boards using the MAX98090 codec, such as Veyron.
diff --git a/sound/soc/rockchip/Makefile b/sound/soc/rockchip/Makefile
index b921909..c324411 100644
--- a/sound/soc/rockchip/Makefile
+++ b/sound/soc/rockchip/Makefile
@@ -1,4 +1,7 @@
 # ROCKCHIP Platform Support
 snd-soc-i2s-objs := rockchip_i2s.o
-
 obj-$(CONFIG_SND_SOC_ROCKCHIP_I2S) += snd-soc-i2s.o
+
+# ROCKCHIP Machine Support
+snd-soc-rockchip-max98090-objs := rockchip_max98090.o
+obj-$(CONFIG_SND_SOC_ROCKCHIP_MAX98090) += snd-soc-rockchip-max98090.o
diff --git a/sound/soc/rockchip/rockchip_max98090.c b/sound/soc/rockchip/rockchip_max98090.c
new file mode 100644
index 0000000..8a7b7ba
--- /dev/null
+++ b/sound/soc/rockchip/rockchip_max98090.c
@@ -0,0 +1,308 @@
+/*
+ * Rockchip machine ASoC driver for boards using a MAX90809 CODEC.
+ *
+ * Copyright (c) 2014, ROCKCHIP CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "rockchip_i2s.h"
+
+#define DRV_NAME "rockchip-snd-max98090"
+
+struct rockchip_max98090 {
+	int gpio_hp_det;
+	int gpio_mic_det;
+};
+
+static int rockchip_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
+					    struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	struct snd_soc_codec *codec = codec_dai->codec;
+	struct snd_soc_card *card = codec->card;
+	int mclk, ret;
+	unsigned int dai_fmt = rtd->dai_link->dai_fmt;
+
+	/* set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
+	if (ret < 0) {
+		dev_err(card->dev, "codec_dai format not set, %d\n", ret);
+		return ret;
+	}
+
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
+	if (ret < 0) {
+		dev_err(card->dev, "cpu_dai format not set, %d\n", ret);
+		return ret;
+	}
+
+	switch (params_rate(params)) {
+	case 8000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 48000:
+	case 64000:
+	case 96000:
+		mclk = 12288000;
+		break;
+	case 11025:
+	case 22050:
+	case 44100:
+	case 88200:
+		mclk = 11289600;
+		break;
+	default:
+		return -EINVAL;
+	}
+	mclk = 12000000;
+	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+				     SND_SOC_CLOCK_OUT);
+	if (ret < 0) {
+		dev_err(card->dev, "cpu_dai clock not set, %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+				     SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		dev_err(card->dev, "codec_dai clock not set, %d\n", ret);
+		return ret;
+	}
+
+	return ret;
+}
+
+static struct snd_soc_ops rockchip_max98090_ops = {
+	.hw_params = rockchip_max98090_asoc_hw_params,
+};
+
+static struct snd_soc_jack rockchip_max98090_hp_jack;
+static struct snd_soc_jack_pin rockchip_max98090_hp_jack_pins[] = {
+	{
+		.pin = "Headphones",
+		.mask = SND_JACK_HEADPHONE,
+	},
+};
+
+static struct snd_soc_jack_gpio rockchip_max98090_hp_jack_gpio = {
+	.name = "Headphone detection",
+	.report = SND_JACK_HEADPHONE,
+	.debounce_time = 150,
+	.invert = 1,
+};
+
+static struct snd_soc_jack rockchip_max98090_mic_jack;
+static struct snd_soc_jack_pin rockchip_max98090_mic_jack_pins[] = {
+	{
+		.pin = "Mic Jack",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static struct snd_soc_jack_gpio rockchip_max98090_mic_jack_gpio = {
+	.name = "mic detect",
+	.report = SND_JACK_MICROPHONE,
+	.debounce_time = 150,
+	.invert = 0,
+};
+
+static const struct snd_soc_dapm_widget rockchip_max98090_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("Headphones", NULL),
+	SND_SOC_DAPM_SPK("Speakers", NULL),
+	SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_kcontrol_new rockchip_max98090_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Speakers"),
+};
+
+static int rockchip_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_card *card = codec->card;
+	struct device_node *dn = card->dev->of_node;
+
+	if (dn) {
+		enum of_gpio_flags flags;
+
+		rockchip_max98090_mic_jack_gpio.gpio = of_get_named_gpio_flags(
+				dn, "rockchip,mic-det-gpios", 0, &flags);
+		rockchip_max98090_mic_jack_gpio.invert =
+				!!(flags & OF_GPIO_ACTIVE_LOW);
+
+		rockchip_max98090_hp_jack_gpio.gpio = of_get_named_gpio_flags(
+				dn, "rockchip,hp-det-gpios", 0, &flags);
+		rockchip_max98090_hp_jack_gpio.invert =
+				!!(flags & OF_GPIO_ACTIVE_LOW);
+	}
+
+	if (gpio_is_valid(rockchip_max98090_mic_jack_gpio.gpio)) {
+		snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
+				 &rockchip_max98090_mic_jack);
+		snd_soc_jack_add_pins(&rockchip_max98090_mic_jack,
+				      1, rockchip_max98090_mic_jack_pins);
+		snd_soc_jack_add_gpios(&rockchip_max98090_mic_jack, 1,
+				       &rockchip_max98090_mic_jack_gpio);
+	}
+
+	if (gpio_is_valid(rockchip_max98090_hp_jack_gpio.gpio)) {
+		snd_soc_jack_new(codec, "Headphone Jack",
+				 SND_JACK_HEADPHONE,
+				 &rockchip_max98090_hp_jack);
+		snd_soc_jack_add_pins(&rockchip_max98090_hp_jack,
+				      1, rockchip_max98090_hp_jack_pins);
+		snd_soc_jack_add_gpios(&rockchip_max98090_hp_jack, 1,
+				       &rockchip_max98090_hp_jack_gpio);
+	}
+
+	return 0;
+}
+
+static struct snd_soc_dai_link rockchip_max98090_dai = {
+	.name = "max98090",
+	.stream_name = "max98090 PCM",
+	.codec_dai_name = "HiFi",
+	.init = rockchip_max98090_asoc_init,
+	.ops = &rockchip_max98090_ops,
+	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+		   SND_SOC_DAIFMT_CBM_CFM,
+};
+
+static struct snd_soc_card snd_soc_rockchip_max98090 = {
+	.name = "ROCKCHIP-I2S",
+	.owner = THIS_MODULE,
+	.dai_link = &rockchip_max98090_dai,
+	.num_links = 1,
+	.controls = rockchip_max98090_controls,
+	.num_controls = ARRAY_SIZE(rockchip_max98090_controls),
+	.dapm_widgets = rockchip_max98090_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rockchip_max98090_dapm_widgets),
+	.fully_routed = true,
+};
+
+static int rockchip_max98090_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct snd_soc_card *card = &snd_soc_rockchip_max98090;
+	struct rockchip_max98090 *machine;
+	int ret;
+
+	machine = devm_kzalloc(&pdev->dev, sizeof(*machine), GFP_KERNEL);
+	if (!machine) {
+		dev_err(&pdev->dev, "Can't allocate rockchip_max98090\n");
+		return -ENOMEM;
+	}
+
+	card->dev = &pdev->dev;
+	platform_set_drvdata(pdev, card);
+	snd_soc_card_set_drvdata(card, machine);
+
+	machine->gpio_hp_det = of_get_named_gpio(np,
+						 "rockchip,hp-det-gpios", 0);
+	if (machine->gpio_hp_det == -EPROBE_DEFER)
+		return -EPROBE_DEFER;
+
+	ret = snd_soc_of_parse_card_name(card, "rockchip,model");
+	if (ret)
+		goto err;
+
+	ret = snd_soc_of_parse_audio_routing(card, "rockchip,audio-routing");
+	if (ret)
+		goto err;
+
+	rockchip_max98090_dai.codec_of_node = of_parse_phandle(np,
+			"rockchip,audio-codec", 0);
+	if (!rockchip_max98090_dai.codec_of_node) {
+		dev_err(&pdev->dev,
+			"Property 'rockchip,audio-codec' missing or invalid\n");
+		ret = -EINVAL;
+		goto err;
+	}
+
+	rockchip_max98090_dai.cpu_of_node = of_parse_phandle(np,
+			"rockchip,i2s-controller", 0);
+	if (!rockchip_max98090_dai.cpu_of_node) {
+		dev_err(&pdev->dev,
+			"Property 'rockchip,i2s-controller' missing or invalid\n");
+		ret = -EINVAL;
+		goto err;
+	}
+
+	rockchip_max98090_dai.platform_of_node =
+				rockchip_max98090_dai.cpu_of_node;
+
+	ret = snd_soc_register_card(card);
+	if (ret) {
+		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
+			ret);
+		goto err;
+	}
+
+	return 0;
+
+err:
+	return ret;
+}
+
+static int rockchip_max98090_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+	snd_soc_jack_free_gpios(&rockchip_max98090_hp_jack, 1,
+				&rockchip_max98090_hp_jack_gpio);
+
+	snd_soc_unregister_card(card);
+
+	return 0;
+}
+
+static const struct of_device_id rockchip_max98090_of_match[] = {
+	{ .compatible = "rockchip,rockchip-audio-max98090", },
+	{},
+};
+
+static struct platform_driver rockchip_max98090_driver = {
+	.driver = {
+		.name = DRV_NAME,
+		.owner = THIS_MODULE,
+		.pm = &snd_soc_pm_ops,
+		.of_match_table = rockchip_max98090_of_match,
+	},
+	.probe = rockchip_max98090_probe,
+	.remove = rockchip_max98090_remove,
+};
+module_platform_driver(rockchip_max98090_driver);
+
+MODULE_AUTHOR("jianqun <xjq@...k-chips.com>");
+MODULE_DESCRIPTION("Rockchip max98090 machine ASoC driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, rockchip_max98090_of_match);
-- 
1.9.1


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